document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=357246>Question 357246</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bit is a 0 or a 1. A bit string of length 7 is a sequence of 7 digits, all of which are either 0 or 1.<BR>\n" );
document.write( "a. how many bit strings of length 7 are there?<BR>\n" );
document.write( "b. how many bit strings of length 7 or less are there? <BR>\n" );
document.write( "(count the empty string of length zero also) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #258867 by </B><A HREF=/tutors/aboutme.mpl?userid=collegegirl11><B>collegegirl11(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=collegegirl11><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=collegegirl11><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=258867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. how many bit strings of length 7 are there? the answer is 128 because 2^7= 2*2*2*2*2*2*2\r<BR>\n" );
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document.write( "b. how many bit strings of length 7 or less are there? <BR>\n" );
document.write( "(count the empty string of length zero also)\r<BR>\n" );
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document.write( "for this one i don't know how to do it. but i am very sure that (a) is correct </SPAN>\n" );
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